Abstract: A user mobility monitoring system has a user-wearable device and a remote analysis system. The user-wearable device monitors the physical mobility of a user, having a plurality of sensors, including at least motion sensors, the device being wirelessly connectable to the Internet and adapted in use to transmit wirelessly to the Internet real-time sensor data from the sensors for the duration of a monitoring period. The remote analysis system is connectable to the Internet and adapted in use to receive the sensor data transmitted via the Internet from the user-wearable device and, during the monitoring period, to analyse the data so as to detect a physical instability event of the user and generate corresponding alert data. An analogous method of monitoring the mobility of a user is also provided. The operation of the user-wearable device is controlled at least partly by the remote analysis system.

Abstract: A user mobility monitoring system has a user-wearable device and a remote analysis system. The user-wearable device monitors the physical mobility of a user, having a plurality of sensors, including at least motion sensors, the device being wirelessly connectable to the Internet and adapted in use to transmit wirelessly to the Internet real-time sensor data from the sensors for the duration of a monitoring period. The remote analysis system is connectable to the Internet and adapted in use to receive the sensor data transmitted via the Internet from the user-wearable device and, during the monitoring period, to analyse the data so as to detect a physical instability event of the user and generate corresponding alert data. An analogous method of monitoring the mobility of a user is also provided. The operation of the user-wearable device is controlled at least partly by the remote analysis system.

Abstract: Methods and systems for controlling a physical system (plant) are disclosed. The plant is modeled as a linear, finite-dimensional system having a state vector, a control input vector, a plant output vector, and a disturbance vector comprising disturbances having known basis functions and unknown amplitudes. An adaptive control law is used with separate adaptive gains for an error vector associated with the plant output vector, and the disturbance vector, plus a fixed gain for a disturbance estimator. The adaptive control law is operable to adjust the control input vector so as to minimize the error vector. The plant includes modes which are not Almost Strictly Positive Real (ASPR).